More on Modbus

摘要

Can you provide a Web link or other info on finding out more about Modbus X(from InTech's April 2005 Networking and Communications department? Most of the information on Modbus X is taken from vendor Scandata regarding Modbus X protocol.This is a variation of Modbus used in some applications,which need additional features not provided in original Modbus.Modbus is,in many companies,a de facto standard in spite of its shortcomings.It cannot,for instance,handle large positive and negative numbers.